Toyo Ink Science Holdings Co.

Tokyo, Japan

Toyo Ink Science Holdings Co.

Tokyo, Japan
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Patent
TOYO INK Science HOLDINGS CO. and Toyo Ink Co. | Date: 2016-11-21

To provide an ink-jet white ink of active energy ray-curable type, wherein the white ink has high printing stability and good hiding property, and is particularly suitable for printing on the single-pass ink-jet printing system. An ink-jet white ink of active energy ray-curable type, comprising titanium oxide, a pigment dispersant, and a polymerizable compound, wherein the content of the titanium oxide is from 15 to 30% by weight with reference to the total weight of the ink, and wherein the weight average particle diameter of the titanium oxide is 180 to 250 nm. In an embodiment of the ink, the titanium oxide is titanium oxide that surface is treated with silica and the pigment dispersant comprises a basic dispersant.


Patent
Toyo Ink Science Holdings Co. and Toyo Ink Co. | Date: 2017-01-18

The present invention relates to an active energy ray-curable inkjet ink composition comprising at least a monomer and a pigment, wherein the monomer comprises at least 2-(2-vinyloxyethoxy)ethyl acrylate and dipropylene glycol diacrylate,a content of 2-(2-vinyloxyethoxy)ethyl acrylate is 36 to 65% by weight in a total weight of the ink, a content of dipropylene glycol diacrylate is 31 to 63% by weight in the total weight of the ink, and a content of the pigment is 1 to c% by weight in the total weight of the ink, wherein the c is the pigment concentration at which the average absorbance at 320-380 nm in 2,000-fold dilution of the ink composition with dipropylene glycol diacrylate is 1. According to the present invention, in particular, it is able to provide single-pass curable inks which has low viscosity and excellent color reproduction, and which enables to reduce the amount of remaining components in a cured film, and the inks are able to be used in various applications such as labels for food, cosmetics, and pharmaceutical products.


Patent
Toyo Ink Science Holdings Co. and Toyocolor Co. | Date: 2017-05-31

Provided is a layered product with high jet-black. A layered product according to the present invention is a layered product (10) including at least a first layer (1) and a second layer (2) that are stacked. A value of L* in a L*a*b* color system defined by JIS Z8729 of the first layer (1) is ten or less. The second layer (2) is formed on the first layer (1) and 0.1 to 1 mass% of carbon nanotubes are contained in a material constituting the second layer (2). In the L*a*b* color system defined by JIS Z8729, when values are measured from a side of a plane of the second layer (2), a value of L* is 2.5 or less, a value of a* is -2.0 or greater and 2.0 or less, and a value of b* is -2.0 or greater and 0.5 or less.


Patent
Toyo Ink Science Holdings Co. and Toyo Ink Co. | Date: 2017-04-05

The invention provides an active energy ray-curable coating varnish which is capable of suppressing outward migration from printed matter, and which is capable of simultaneously achieving excellent curability and excellent line applicability, in addition to low yellowing characteristics. The coating varnish contains a (meth)acrylate compound (A) and a photopolymerization initiator (B), wherein at least one compound selected from the group consisting of ethylene oxide-modified pentaerythritol tetraacrylates, ethylene oxide-modified diglycerol tetraacrylates, ethylene oxide-modified trimethylolpropane triacrylates and ethylene oxide-modified ditrimethylolpropane tetraacrylates is used as the (meth)acrylate compound (A), and at least one of 2-hydroxy-1-[4-[4-(2-hydroxy-2-methyl-propionyl)-benzyl]-phenyl]-2-methylpropan-1-one (b1) and oligo[2-hydroxy-2-methyl-1-[4-(1-methylvinyl)phenyl]propanone] (b2) is used as the photopolymerization initiator (B).


Patent
Toyo Ink Science Holdings Co. and Toyo Ink Co. | Date: 2017-02-01

An active energy curable inkjet ink composition which has excellent curability and abrasion resistance, and which does not easily cause curing wrinkles and has excellent initiator solubility, little odor and low viscosity, is provided. The ink contains a pigment, a polymerizable compound and a photopolymerization initiator, wherein the polymerizable compound comprises 80 wt% or more of aliphatic ethylenically polymerizable compounds based on a total weight of the polymerizable compound, wherein the aliphatic ethylenically polymerizable compounds comprise polyfunctional (meth)acrylates including at least 2-(2-vinyloxyethoxy)ethyl acrylate and dipropylene glycol diacrylate, the photopolymerization initiator comprises an acyl phosphine oxide, and an amount of the dipropylene glycol diacrylate is 16 wt% or more and an amount of the acyl phosphine oxide is 10 wt% or more with respect to a total weight of the inkjet ink composition.


Patent
Toyo Ink Science Holdings Co. and Toyo Ink Co. | Date: 2017-02-01

An active energy ray-curable inkjet ink comprising an organic solvent having a boiling point of 140C to 300C, and a polymerizable monomer containing 2-(2-vinyloxyethoxy)ethyl acrylate, wherein a content of the organic solvent is from 0.1 to 10% by weight with reference to the total weight of the ink, is provided. The ink has extremely high curability and discharge stability, and excellent adhesion to various base materials.


A thermosetting resin composition excellent in dimensional stability during curing and adhesiveness, heat resistance, moist heat resistance, electrical insulating properties, flexibility, low dielectric properties and low dissipation factor properties after curing is provided. A thermosetting resin composition according to the present invention is a thermosetting resin composition containing a polyamide (A) made by polymerization of a polybasic acid monomer and a polyamine monomer and having a phenolic hydroxyl group on a side chain, and a compound (B) with a functionality of three or more that can react with the phenolic hydroxyl group. Monomers that form the polyamide (A) include a monomer having a phenolic hydroxyl group and a monomer having a hydrocarbon group with a carbon number of 20 to 60 (excluding an aromatic ring to which the phenolic hydroxyl group bonds) and having a cyclic structure with a carbon number of 5 to 10.


Patent
Toyo Ink Science Holdings Co. and Toyocolor Co. | Date: 2017-04-26

The present invention is a laminate where a carbon nanotube-containing layer composed at least of carbon nanotube and resin is laminated above a substrate. The laminate is a laminate where a clear layer is further laminated above a laminated surface of the carbon nanotube-containing layer. The laminate has L* being equal to or less than 2.5, a* being in a range of -2 to 2, and b* being in a range of -2 to 0.3, each measured from the laminated surface. The carbon nanotube-containing layer above the substrate is formed by coating. The clear layer is transparent resin or glass. Note that L*, a* and b* indicate values in L*a*b* color system specified in JIS Z8729.


Patent
Toyo Ink Science Holdings Co. and Toyo Ink Co. | Date: 2016-02-24

Provided is a non-aqueous maintenance liquid for an active energy ray-curable inkjet ink which can be used as a cleaning liquid for removing the inkjet ink and as a preserving liquid to fill the head when the printer is not in operation. The non-aqueous maintenance liquid for an active energy ray-curable inkjet ink of the present invention comprises a main liquid component, a pigment dispersant resin, and a surface control agent, wherein the main liquid component is an organic solvent and/or an active energy ray-curable compound, and the amount of the surface control agent is 0.01 to 10% by weight in 100% by weight of the maintenance liquid.


Patent
TOYO INK Science HOLDINGS CO. and Toyocolor Co. | Date: 2016-02-02

A binder composition for a non-aqueous secondary battery electrode may comprise functional group-containing crosslinked resin microparticles produced by polymerizing: (A) at least one monomer selected from the group consisting of (a) a monomer having one ethylenically unsaturated group per molecule and also having a monofunctional or polyfunctional epoxy group, (b) a monomer having one ethylenically unsaturated group per molecule and also having a monofunctional or polyfunctional amide group, and (c) a monomer having one ethylenically unsaturated group per molecule and also having a monofunctional or polyfunctional hydroxy group; (B) at least one monomer selected from the group consisting of (d) a monomer having one ethylenically unsaturated group per molecule and also having an alkoxysilyl group and (e) a monomer having at least two ethylenically unsaturated groups per molecule; and (C) (k) a monomer which has an ethylenically unsaturated group and is different from the monomers (a) to (e).

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